| Name | Role | Place | Source | |
|---|---|---|---|---|
| Lodewijk Frans Keizer | Registered | 's-Gravenhage | Studbooks | |
| Lodewijk Frans Keizer | Registered | 1815 | Ginneken | Population register |
| Lodewijk Frans Keizer | Child | 1842 | Heusden | Church records baptisms |
| Lodewijk Frans Keizer | Child | 1842 | Heusden | Civil registration births |
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